3995637725 has 12 divisors (see below), whose sum is σ = 4979747124. Its totient is φ = 3180280320.

The previous prime is 3995637691. The next prime is 3995637749. The reversal of 3995637725 is 5277365993.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 54434884 + 3941202841 = 7378^2 + 62779^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3995637725 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400724 + ... + 410573.

It is an arithmetic number, because the mean of its divisors is an integer number (414978927).

Almost surely, 2^3995637725 is an apocalyptic number.

It is an amenable number.

3995637725 is a deficient number, since it is larger than the sum of its proper divisors (984109399).

3995637725 is a wasteful number, since it uses less digits than its factorization.

3995637725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811504 (or 811499 counting only the distinct ones).

The product of its digits is 10716300, while the sum is 56.

The square root of 3995637725 is about 63211.0569837271. The cubic root of 3995637725 is about 1586.8237854074.

The spelling of 3995637725 in words is "three billion, nine hundred ninety-five million, six hundred thirty-seven thousand, seven hundred twenty-five".